Weed & Green Pre-emergent and Post-Emergent Weed Killer

Name: Weed & Green Pre-emergent and Post-Emergent Weed Killer
Brand: Sunday
SKU: SBA3116
Price: 25.00 USD
Availability: InStock
Rating: 4.1 (251 reviews)

$25

(1) 32 oz. concentrate, covers up to 2,500 sq. ft.

251 reviews

Best Seller

Weed & Green Pre-emergent and Post-Emergent Weed Killer

Weed & Green Pre-emergent and Post-Emergent Weed Killer data sheet

Stop weeds before they start. Handle the ones that already showed up.

Tackles dandelions, clover, and broadleaf weeds already in your lawn, suppresses crabgrass, and greens up your grass. No synthetic herbicides.

Free shipping! Ships in 1-2 business days

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Weed control that kills weeds, not your grass

Picture your lawn two weeks from now. Greener. No dandelions poking through. No crabgrass creeping in from the edges. That's what Weed & Green is built to do.

One iron-based formula handles five jobs at once: knocking out broadleaf weeds already growing, suppressing crabgrass and weed germination before they start, clearing moss and algae, helping keep lawn disease in check, and boosting grass color in the process.

Targets what shouldn't be there. Leaves your grass greener.

Now available in custom lawn plans. Not a subscriber yet? Build your plan.

What's doing the work

Broadleaf weed killer Tackles dandelions, clover, chickweed, and more on contact
Crabgrass preventer Suppresses crabgrass and annual weeds before they sprout
Moss, algae, and lichen control Clears what creeps in where grass struggles
Lawn disease suppression Helps keep common fungal issues out
Fast green-up Iron boosts grass color while it works on weeds
Hose-end ready Sprayer included, no mixing needed
Safe for all turfgrasses For cool and warm season grasses

Backed by our satisfaction guarantee

How to use

Attach the sprayer to your hose.
Apply evenly to a dry lawn, temperatures between 50 and 85°F.
Reapply in 3 to 6 weeks if hardy weeds persist.

Seeding after Weed & Green: Wait 1 day before seeding. Heads up: Iron can stain hardscapes. Rinse any pavement immediately if you get drift. Not sure what you're dealing with? Use our weed ID guide.

FAQ

What weeds does Weed & Green kill or control?

Broadleaf weeds including dandelions, clover, chickweed, and oxalis. It also suppresses germination of crabgrass, and clears moss, algae, and lichen. For a full weed list, check the product label in documents.

Can I put down pre-emergent and fertilizer at the same time?

You can on the same day, not the same time. Apply fertilizer first, let it dry fully, then apply Weed & Green. And yes, Weed & Green can be used as a pre-emergent and post-emergent weed control in the same season, just follow the timing on the label.

How often do I need to apply Weed & Green?

Apply once thoroughly to the lawn, and then reapply 3 to 6 weeks later in the growing season. We recommend only applying up to two times as a preemergent or post-emergent in your lawn.

When do I apply Weed & Green?

Early spring is your best window for crabgrass prevention, typically when soil temps are approaching 55°F. For existing broadleaf weeds, apply any time during the growing season when weeds are actively growing and temperatures are between 50 and 85°F.

Can I put grass seed down after Weed & Green?

Yes. Wait 1 day after applying, then seed as normal.

How long after applying is it safe for kids and pets?

Once fully dry, it's safe for kids, pets, and bare feet. On a warm sunny day that's usually 1 to 2 hours. Give it a bit longer if it's cool or humid.

How soon will I see results?

Most broadleaf weeds show visible wilting within 24 to 72 hours. Full results within 1 to 2 weeks depending on weed size and conditions. The green-up from iron is often visible within a few days.

How much lawn does the Weed & Green cover?

Each bottle covers up to 2,500 sq. ft. per post-emergent application, and up to 1250 sq. ft. for a pre-emergent application.

Documents

Weed & Green Label

Weed & Green Safety Data Sheet

Bottle of Weed & Green Hose-end Sprayer for Lawns on green lawn

Learn more from The Shed

Customer reviews

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Sunday F.

Verified Buyer

LocationLone Tree, Colorado

Greened the lawn and reduced weeds

I applied Weed & Green to my lawn in mid-April. The lawn turned a deep green much earlier than other lawns in the neighborhood and I haven't seen as many early weeds as in the past. I'll definitely continue using it.

Published date

05/10/25

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Sunday F.

Verified Buyer

LocationWaxhaw NC

Great product

This really did a great job in the clovers and weeds. It greened up our grass for spring too!

Published date

05/05/25

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Sunday F.

Verified Buyer

LocationSmyrna GA

Sorry

It did not work for me In fact it seemed to increase the weeds I have had to hire someone to come do it I have sent in pictures and received a 5 lb bag of seed i response

Published date

05/04/25

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Verified Reviewer

Didn’t work for me

I’m in north Fort Worth and this product does not work as a post emergent. I’ve done two sprays and still have old and new weeds

Sunday

Thanks for giving Weed & Green a couple of tries. Weed & Green is our fertilizer plus weed control blend, and while it can knock back many broadleaf weeds, it works best when weeds are young and actively growing. In North Fort Worth, mature weeds and grassy weeds like crabgrass or rescuegrass may not respond, even after two applications. We would love to help dig in more. Our yard expert Sunny can help identify what’s popping up or speak to one of our yard advisors to recommend the best next step for your lawn.

Published date

05/19/26

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Lisa

Verified Reviewer

Prior to buying

Can anyone tell me how many bottles for a quarter acre

Sunday

Hello Lisa! Thank you for reaching out. We'll send you a direct email as well, but wanted to answer the question here too. For a quarter acre, you’d want 9 bottles of Weed and Green. A quarter acre is 10,890 sq ft, and each 32 oz bottle treats up to 1,250 sq ft.

Published date

04/15/26

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Valerie

Verified Reviewer

Not effective at all

I used the sprayer that was sent with the bottle. I shook it as directed. The spray pattern while I was using it was very inconsistent. Most of the time it was more like a clump of water with a few outlying sprays. Occasionally it was a good even fan. No idea why it wasn’t consistent. It didn’t seem...

Sunday

Dear Valerie, we're truly sorry to hear about your experience with the sprayer. That sounds like a frustrating experience from start to finish. Inconsistent spray patterns and that sudden “all at once” emptying usually point to a sprayer or pouch flow issue, not how you applied it, and we totally get how that would impact results. For next time, a quick fix is to pause and check that the sprayer dial is fully set, connections are tight, and give the bottle another shake if things look uneven. If it ever starts spraying watery and then dumps product, stopping and resetting the sprayer can help keep the application even. We’d love to make this right and help get your weed control back on track. Please email [email protected] and we’ll dig in with you and get a solution that actually works

Published date

04/06/26

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Bart P.

Verified Reviewer

LocationCharlotte, North Carolina.

Not Happy

Not happy with the results. Did not work on preventing and did not kill the existing or help to green up.

Sunday

Hello Bart, we apologize for not getting the results you hoped for! Totally fair to expect more than that—this should be doing more for your lawn. Weed & Green works best when it’s paired with the right timing and conditions (active weed growth, a few applications, and regular watering), but if you’re not seeing any improvement, something’s off. Happy to help troubleshoot what’s going on—shoot us a note and we’ll take a closer look at your lawn and make it right.

Published date

04/06/26

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Monika B.

Verified Reviewer

LocationCharlotte,NC

Waste of money

I was really hopeful about an all natural way to kill the weeds that we’re taking over my yard. Unfortunately this didn’t perform well enough. I had a mixture of henbit, clovers, and dandelions in my yard. The clovers and hen it browned and died within a few days (not hours). The dandelions responde...

Sunday

Hello Monika, we're sorry to hear about your experience with our product. We recommend reaching out to our customer support team for assistance and guidance on how to effectively tackle the weeds in your yard. Thank you for sharing your feedback with us.

Published date

03/27/26

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Sunday F.

Verified Reviewer

LocationAmerican Fork, Utah

Good for weed control

I tried the weed and green last year, i will be using it again this year.

Published date

03/10/26

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Ann F.

Verified Reviewer

LocationNc

Doesn’t work

Didn’t work. Followed directions and not a single weed was killed

Sunday

Hi Ann, Sorry to hear that. If weeds did not respond after following the directions, something in the timing, coverage, or weed type may be getting in the way. Some weeds require repeat applications or a broadcast approach across the lawn rather than a single treatment, especially if they are well established. For larger areas of broadleaf weeds, a broadcast option like https://www.getsunday.com/shop/lawn-care/weed-green-liquid-weed-control can be more effective across the whole lawn, while targeted options are best for individual weeds. Our yard advisors would be glad to take a closer look at what you’re seeing and help troubleshoot so you can get better results. Please send us a DM or email [email protected] with a photo of the weeds and we will help you get things back on track

Published date

03/04/26

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